1. When a defendant challenges the sufficiency of the evidence in a criminal case, an
appellate court must consider all of the evidence in a light most favorable to the
prosecution and determine whether a rational factfinder could have found the defendant
guilty beyond a reasonable doubt.

2. It is for the jury to decide the credibility of witnesses and to resolve inconsistencies in the
evidence. An appellate court does not weigh conflicting evidence or pass on the credibility
of witnesses. An appellate court resolves all questions of credibility in favor of the State.

3. An appellate court's first consideration when reviewing a trial court's decision concerning
the admission of evidence is whether the evidence is relevant. Once relevance is
established, an appellate court must apply the evidentiary rules governing the admission
and exclusion of evidence as a matter of law or in the exercise of the trial court's
discretion, depending on the contours of the evidentiary rule question. When an issue
involves the adequacy of the legal basis for the trial court's decision, the issue is reviewed
using a de novo standard.

4. Bias, interest, or improper motives of a witness may always be shown in order to place a
witness' testimony in proper perspective. A cross-examiner should have wide latitude in
establishing partiality, bias, motive, or interest. Because matters of inquiry on this issue are
not considered collateral, the cross-examiner may introduce extrinsic evidence unless the
witness admits the fact or event.

5. Evidence of bias or prejudice of a witness is relevant and may be shown on
cross-examination or in rebuttal or by other witnesses or evidence.

6. Generally, unadjudicated criminal offenses may not be used to impeach a witness in a
criminal case. Nevertheless, evidence of pending charges against the witness is admissible
for the limited purpose of showing bias, prejudice, interest, and motive of the witness in
testifying as he or she did.

7. Although the extent of cross-examination of a witness is generally in the discretion of the
trial court, a more searching examination is to be allowed of a witness who is a party
principal. Moreover, where the determination of the main issue of fact must largely depend
upon the credence to be given the testimony of a litigant witness, a wider range of
cross-examination should be allowed than is usually permitted in the cross-examination of
witnesses in general.

8. When determining whether a trial court's refusal to allow cross-examination of a witness
about possible bias or motivation for testifying was harmless, an appellate court considers
the following factors: (1) the importance of the witness' testimony in the prosecution's
case; (2) whether the testimony was cumulative; (3) the presence or absence of evidence
corroborating or contradicting the testimony of the witness on material points; (4) the
extent of the cross-examination otherwise permitted; and (5) the overall strength of the
prosecution's case.

9. Under the facts of this case, evidence that the principal witness was being criminally
investigated for forging the defendant's checks was relevant and admissible to show the
witness' bias and motive for testifying against the defendant. The failure to admit such
evidence constituted reversible error in this case.

GREEN, J.: Michael Scott appeals from his jury trial convictions and his sentences for two
counts of the sale of cocaine within 1,000 feet of a school in violation of K.S.A. 2004 Supp.
65-4161(d) and K.S.A. 65-4107(b)(5). First, Scott contends that there was insufficient evidence
for
the jury to convict him of the two counts of sale of cocaine. Nevertheless, after reviewing the
evidence in the light most favorable to the State, we conclude that there was sufficient evidence to
convict Scott of the charges. Next, Scott argues that the trial court erred by refusing to admit
testimony at trial that the principal witness in the case was being criminally investigated for
forging Scott's checks. We determine that such evidence was relevant and admissible to show the
witness' bias and motive for testifying against Scott. Under the circumstances of this case, the
failure to admit such evidence did not constitute harmless error. Because we are reversing Scott's
convictions and remanding for a new trial, the remaining issues raised by Scott are moot and will
not be addressed in this opinion. Accordingly, we reverse and remand for a new trial.

In August 2004, Nicky Soden approached Officer Terry Kelley about becoming an
informant for the Atchison Police Department. Soden admitted that he had a problem with drugs
but said that he wanted to "clean himself up." Soden told Kelley that if he became an informant,
no one would want to deal with him, and he would get off of drugs. During his first interview
with Kelley, Soden mentioned several names of people involved in selling drugs but did not
mention Scott's name.

Over the next four months, Soden worked as an informant in several undercover drug
buys. Soden agreed not to use any controlled substances during his period of association with the
police department. Nevertheless, Soden showed up intoxicated with what Kelley believed was
alcohol one time, and Kelley had to send him home. Soden also admitted that he used drugs a
couple of times while working with Kelley. During the 4 months he worked as an informant,
Kelley gave Soden approximately $470 for expenses such as groceries. Soden was provided with
free housing and subsidized utilities while he was working as an informant. In addition, Scott
presented evidence that an arrest warrant, which was issued for Soden in November 2004, was
cleared in February 2005.

Soden first mentioned Scott's name around the end of September 2004. On October 12,
2004, Soden contacted Kelley and said that he was going to try to buy drugs from Scott. Kelley
met with Soden, searched him and fit him with a listening device, gave him $40 to buy crack
cocaine, and dropped him off in front of a school near Scott's house. Kelley watched Soden walk
up a hill towards Scott's house. It was dark outside, and Kelley could not see Soden when he
arrived at Scott's house. Over the listening device, Kelley heard Soden knock on a door and say
"Mike" when the door was answered. Kelley could hear Soden and another man talking.

Soden testified that when he arrived at Scott's house, he asked Scott to get him some
crack cocaine. According to Soden, Scott said he needed to make a phone call. After Scott told
Soden it would be about 30 minutes, Soden returned to Kelley's car. Kelley took Soden to the
police station and searched him. Soden told Kelley that Scott and Scott's girlfriend were the only
ones at the house. Approximately 25 minutes later, Kelley dropped Soden off near Scott's house.

Soden testified that when he returned to Scott's house, Scott made another telephone call
and then went outside. Kelley saw Scott's car leave the house and return approximately 10
minutes later. Soden testified that Scott returned with the crack cocaine. Soden gave Scott the
money and gave Scott a piece of the crack cocaine as Scott's pay for getting it. Kelley testified
that he heard Soden ask for the other bag and state that he "got dogged" or cheated. When Soden
returned to Kelley's car, Soden gave Kelley a package of crack cocaine. Kelley took Soden back
to the police station, searched him, and took a written statement from him. Later testing revealed
that the crack cocaine weighed .09 grams.

On November 27, 2004, Soden called and asked Kelley to pick him up at a church near
Scott's house. When Kelley picked him up, Soden said that he was going to buy drugs from Scott
that night. Kelley drove to a parking lot where he searched Soden, fit him with a listening device,
and gave him $50 to purchase crack cocaine. Kelley dropped Soden off near Scott's house around
10:30 p.m. Soden testified that Scott went out the back door and returned with the crack cocaine.
Soden gave Scott a share of the crack cocaine as his pay for getting it. Approximately 30 minutes
after Kelley dropped him off, Soden returned to Kelley's car with a bag of crack cocaine. Later
testing revealed that the crack cocaine weighed .25 grams.

Scott was charged with two counts of sale of cocaine within 1,000 feet of a school in
violation of 2004 Supp. K.S.A. 65-4161(d). At trial, Scott testified that he and Soden had been
friends and had daughters around the same age. According to Scott, Soden borrowed Scott's car
several times and used some of Scott's tools. In addition, Soden admitted that he had borrowed
money from Scott but had never repaid him. According to Scott, his friendship with Soden
became strained when he asked him to repay the loaned money. Scott testified that he had loaned
Soden between $1,000 and $3,000.

Scott testified that he had never sold crack cocaine. Scott admitted that he had a problem
with crack cocaine in 2003 but testified that Soden was the one who would get it for him.
According to Scott, Soden came to his house on October 12, 2004, with $40 and asked Scott to
get him some crack cocaine. Scott told Soden that he could not get any crack, gave him his
money back, and told him to leave his house. Nevertheless, Soden stayed at Scott's house. Scott
testified that he eventually went to the store to get bread for his lunch but the store was closed.

Scott testified that Soden returned to his house on Thanksgiving weekend in 2004. When
Soden came inside the house, he was confronted with several people who had previously loaned
him money. When they began asking for their money, Soden asked to use Scott's telephone.
According to Scott, Soden left but then returned to the house to call for a ride. Soden eventually
left when Scott and his girlfriend left the house. Scott denied selling crack cocaine to Soden.

The audiotapes from the listening device worn by Soden at the controlled buys in October
and November 2004 were never introduced at trial. Kelley testified that he erased the tape
covering Soden's initial visit to Scott's house on October 12, 2004, because of limited time
available on the tape. Although it appears that there was an audiotape of the second visit to
Scott's house on October 12, 2004, the State never introduced it into evidence at trial. Before
trial, both parties indicated to the trial court that the audiotape was hard to understand. No
audiotape was available for the November 27, 2004 controlled buy, because Kelley had
accidentally switched the device to the monitor setting instead of the record setting.

The jury found Scott guilty of the two counts of sale of cocaine. The trial court sentenced
Scott to a controlling sentence of 59 months in prison.

I. Sufficiency of the Evidence

First, Scott contends that there was insufficient evidence for the jury to convict him of the
two counts of sale of cocaine. When a defendant challenges the sufficiency of the evidence in a
criminal case, an appellate court must consider all of the evidence in a light most favorable to the
prosecution and determine whether a rational factfinder could have found the defendant guilty
beyond a reasonable doubt. State v. Parker, 282 Kan. 584, 597, 147 P.3d 115 (2006).

In arguing that there was insufficient evidence, Scott attacks the credibility of the
witnesses and points to inconsistencies in the evidence. Specifically, Scott maintains that Soden's
and Kelley's testimonies were untrustworthy, that there were flaws in the police procedures for
the drug buys, and that the evidence showed that Soden had a motive to falsely implicate Scott.
Nevertheless, it is for the jury to decide the credibility of witnesses and to resolve inconsistencies
in the evidence. See State v. Donaldson, 279 Kan. 694, 701, 112 P.3d 99 (2005). As
an appellate
court, we do not weigh conflicting evidence or pass on the credibility of witnesses. Further, we
resolve all questions of credibility in favor of the State. State v. Kuykendall, 264 Kan.
647, 651,
957 P.2d 1112 (1998).

Here, the State presented evidence that on two separate occasions, Soden went to Scott's
house and gave money to Scott for crack cocaine. Scott then left his house and got the crack
cocaine for Soden. When Scott returned to his house, he gave the crack cocaine to Soden. As
payment for Scott getting the crack cocaine, Soden gave Scott a portion of the crack cocaine.
Scott's house was located less than 1,000 feet from a school. A review of the evidence in the light
most favorable to the State leads to the conclusion that there was sufficient evidence to convict
Scott of the sale of cocaine within 1,000 feet of a school.

II. Admission of Evidence Concerning Forgery Investigation

Next, Scott contends that the trial court erred when it refused to admit testimony at trial
that Soden was being criminally investigated for forging Scott's checks. Scott maintains that such
evidence was essential to his ability to present a full and complete defense.

Under our state and federal Constitutions, a defendant is entitled to present the theory of
his or her defense. The defendant's fundamental right to a fair trial is violated if relevant,
admissible, and noncumulative evidence which is an integral part of the theory of the defense is
excluded. State v. Lawrence, 281 Kan. 1081, 1085, 135 P.3d 1211 (2006).

Nevertheless, the defendant's right to present his or her defense is subject to statutory
rules and case law interpretation of the rules of evidence and procedure. Lawrence,
281 Kan. at
1085. An appellate court's first consideration when reviewing a trial court's decision concerning
the admission of evidence is whether the evidence is relevant. Once relevance is established, an
appellate court must apply the evidentiary rules governing the admission and exclusion of
evidence as a matter of law or in the exercise of the trial court's discretion, depending on the
contours of the evidentiary rule question. When the issue involves the adequacy of the legal basis
for the trial court's decision, the issue is reviewed using a de novo standard. State v.
Gunby, 282
Kan. 39, 47-48, 144 P.3d 647 (2006).

Here, evidence concerning the alleged forgery came out at the preliminary hearing when
Soden admitted that he had signed Scott's name to two checks and had cashed them in March and
April 2004. Soden testified that Scott was at home at the time and had told him to write the
checks. Nevertheless, defense counsel asserted that Scott was in custody on a parole violation
when the checks were written and could not have authorized Soden to write the checks.

Before trial, defense counsel asked the trial court to allow to him present testimony from a
law enforcement officer about an ongoing forgery investigation involving Soden and the checks.
The trial court denied defense counsel's request on the ground that only evidence of a
conviction
is allowed for impeachment purposes, not evidence of an investigation. Defense counsel then
asked the trial court if he could question Soden concerning his failure to respond to an inquiry
directed to him by the officer investigating the forgery. The trial court again denied defense
counsel's request on the ground that there had been only an investigation. The trial court told
defense counsel that he could characterize the checks as a debt between Scott and Soden to show
bias or ill will in that context.

Scott contends that evidence of the forgery investigation was integral to his defense
because it would establish a motive for Soden to falsely implicate him in a crime. Scott further
argues that this evidence was relevant to show Soden's bias against Scott and that it discredited
Soden's testimony.

K.S.A. 60-420, which allows a party to attack or support the credibility of a witness,
states:

"Subject to K.S.A. 60-421 and 60-422, for the purpose of impairing or supporting
the
credibility of a witness, any party including the party calling the witness may examine the
witness and introduce extrinsic evidence concerning any conduct by him or her and any other
matter relevant upon the issues of credibility."

One of the methods or techniques for attacking the credibility of a witness is to show
partiality,
including bias, motive, and interest in the outcome. See Barbara Lawyers Guide to Kansas
Evidence § 3.1, p. 59 (5th ed. 2007). Our Supreme Court has held: "Bias, interest, or
improper
motives of a witness may always be shown in order to place the witness' testimony in proper
perspective." State v. Bowman, 252 Kan. 883, Syl. ¶ 1, 850 P.2d 236 (1993).
"The cross-examiner should have wide latitude in establishing partiality, bias, motive or interest.
Matters of
inquiry here are not considered collateral hence the cross-examiner may introduce extrinsic
evidence unless the witness admits the fact or event." Barbara,§ 3.1, p. 60. "[E]vidence of
bias or
prejudice of a witness is relevant and may be shown on cross-examination or in rebuttal or by
other witnesses or evidence. 81 Am. Jur. 2d, Witnesses § 547." Lindquist v. Ayerst
Laboratories,
Inc., 227 Kan. 308, 315, 607 P.2d 1339 (1980).

Nevertheless, arguing that the trial court properly denied Scott's request to introduce
evidence of the forgery investigation, the State cites State v. Handley, 234 Kan. 454,
673 P.2d
1155 (1983), and State v. Sanders, 263 Kan. 317, 949 P.2d 1084 (1997). The State's
reliance on
these two cases is misplaced. For example, neither Handley nor Sanders
involved a situation
where the evidence sought to be introduced showed a bias on the part of the witness either for or
against the defendant. In Handley, the defendant learned after trial that the
complaining witness
had pled guilty to misdemeanor theft the day after trial. On appeal, the defendant argued that he
should receive a new trial because the State withheld information about the witness' criminal
history. Our Supreme Court rejected the defendant's argument, stating that "[e]vidence of a
pending charge against a witness, which has not resulted in a conviction, is inadmissible to
impeach the witness' credibility. K.S.A. 60-421 specifically requires a conviction before evidence
of a crime is admissible for that purpose.'" 234 Kan. 454, Syl. ¶ 9.

In Sanders, our Supreme Court upheld the trial court's decision to not allow
the defense to
cross-examine a police detective about his prior diversion for a theft charge. Our Supreme Court
held that the defendant had not presented any credible argument that the evidence was admissible
for any purpose other than to impeach the officer's character trait of veracity. As a result, the
evidence must be excluded under K.S.A. 60-422(d), which prohibits the admissibility of evidence
of specific instances of a witness' conduct relevant only as tending to prove a trait of the witness'
character. Our Supreme Court rejected the defendant's argument that the trial court's ruling
unconstitutionally denied him his right to confront and cross-examine Lawson, prevented him
from presenting his defense, and precluded him from receiving a fair trial. Recognizing that the
defendant had failed to show that the evidence had any bearing upon the officer's motivation for
testifying in the case, our Supreme Court held:

"[The defendant] has failed to show the evidence he sought to cross-examine [the
officer] about had any bearing upon [the officer's] motivation for testifying in this case. [The
defendant] simply wanted to use this evidence to attack [the officer's] credibility, thereby
impeaching his testimony. Restricting such cross-examination in no way deprived [the defendant]
of his constitutional right to confront witnesses. As no error, constitutional or otherwise, was
committed in the exclusion of these questions pursuant to our rules of evidence, this issue fails."
263 Kan. at 321.

Here, unlike Handley and Sanders, Scott was not attempting to
generally impeach Soden's
credibility. Rather, the evidence that Scott sought to introduce was to show Soden's bias against
him and Soden's motivation to testify against him. The facts surrounding the forgery investigation
displayed the contentious relationship that existed between Scott and Soden, the principal witness
in this case. Soden possibly took Scott's checks and cashed them without Scott's permission
several months before the alleged cocaine sales took place in this case. Although Scott and Soden
had been good friends for several years, their friendship had turned so sour that Scott reported
Soden to law enforcement for forging his checks. Soden then became the subject of a forgery
investigation by law enforcement. By bringing out evidence that Soden was a suspect in a criminal
investigation where Scott was the victim, the defense could show a bias by Soden and a
motivation for testifying falsely against Scott in order to send him to prison. As a result, this
evidence had a direct bearing on Scott's defense: that he did not sell the cocaine as Soden asserted
he did.

As stated earlier, if a witness has an interest in the outcome, or is prejudiced, hostile, or
sympathetic, the witness may be impeached by having these matters exposed to the jury. Any
doubt on this point vanishes when we consider several other decisions by our Supreme Court. In
State v. Bowman, 252 Kan. 883, 850 P.2d 236 (1993), our Supreme Court upheld
the trial court's
decision to allow the State to cross-examine a defense witness about her prior conviction for
obstruction of official duty. The witness, who lived with the defendant, had been convicted of
obstruction of official duty based on her taking shoes with bullets hidden inside to the defendant in
jail. On appeal, the defendant argued that the evidence was irrelevant and inadmissible under
K.S.A. 60-421 because it was not a crime of dishonesty or false statement. Nevertheless, our
Supreme Court upheld the admission of the evidence, determining that the evidence of how far
the witness would go to help the defendant was relevant and was admissible to show relationship
and bias. See also State v. Loveland, 8 Kan. App. 2d 196, 199-200, 653 P.2d 472
(1982), rev.
denied 232 Kan. 876 (1983) (upholding admission of cross-examination testimony from
defense
witness that he had "done drugs" with defendant where "the testimony was elicited to illustrate
the witness' social relationship with defendant which would, in turn, indicate bias or prejudice.").

In State v. Wesson, 247 Kan. 639, 802 P.2d 574 (1990), cert.
denied 501 U.S. 1236
(1991), the State attempted to introduce evidence that a defense witness had shared a jail cell with
the defendant in order to show that based upon a relationship established while sharing a cell with
the defendant, the witness was biased. The trial court allowed the State to bring out this evidence
during cross-examination only if the State referenced the least serious crime for which the witness
was being held in jail. The defendant argued that the State was attacking the witness' credibility on
the basis of a crime with which he had been charged but not convicted. On appeal, our Supreme
Court upheld its interpretation of K.S.A. 60-421 in Handley but determined that the
statement of
law from Handley was not properly applied to the facts of its case. In affirming the
trial court's
ruling, our Supreme Court looked to K.S.A. 60-420. Our Supreme Court held that the State was
not attempting to impeach the witness' credibility under K.S.A. 60-421 but was trying to establish
that the witness was biased based on his relationship with the defendant. Our Supreme Court held
that the evidence was not prohibited by K.S.A. 60-421.

In Bowman, Loveland, and Wesson, the State was
allowed to bring in evidence of a
relationship between the defendant and a defense witness to show that the defense witness was
biased towards the defendant. Similarly, in State v. Harden, 206 Kan. 365, 377, 480
P.2d 53
(1971), our Supreme Court held that in order to show the bias of a witness, it was proper for the
State to show the close relationship between the witness and the defendant by their living
together. Conversely, in order to show that Soden, the State's principal witness, was biased
against him, Scott should have been allowed to bring in evidence of his contentious relationship
with Soden.

The State, by citing Handley, seems to focus on the fact that the forgery
investigation
against Soden had not resulted in a conviction and was inadmissible under K.S.A. 60-421.
Nevertheless, other jurisdictions have recognized that although a criminal conviction is required to
generally impeach a witness, evidence that a witness has been arrested or charged with a crime is
admissible to show bias, interest, or motive of the witness to testify falsely. In People v.
Triplett,
108 Ill. 2d 463, 475, 485 N.E.2d 9 (1985), the Illinois Supreme Court held that "although
evidence of an arrest or indictment is not admissible to impeach credibility generally, it is
admissible to show that the witness' testimony may be influenced by bias, interest, or motive to
testify falsely." In Gutierrez v. State, 681 S.W.2d 698, 706 (Tex. App. 1984), the
Texas Court of
Appeals stated that "[g]enerally, unadjudicated criminal offenses may not be used to impeach a
witness in a criminal case; however, evidence of pending charges against the witness is admissible
for the limited purpose of showing bias, prejudice, interest, and motive of the witness in testifying
as he did. [Citation omitted.]"

Similarly, in Bowman, Loveland, and Wesson, part of
the relationship and bias evidence in
all three of these cases included evidence of prior criminal activity by the witness, which
seemingly would have been inadmissible if the State were attempting to use such evidence to
generally impeach the witness' credibility under K.S.A. 60-421. Nevertheless, our Supreme Court
held that the evidence was properly admitted to show bias of a witness.

Here, while evidence of the forgery investigation against Soden was inadmissible under
K.S.A. 60-421 for general impeachment purposes, the evidence was admissible to show Soden's
testimony might be influenced by bias or a motive to testify falsely. The Triplett court
held that
cross-examination to show bias, interest, or motive to testify falsely is a matter of right. 108 Ill. 2d
at 475. When showing bias, interest, or motive, "'the evidence used must give rise to the inference
that the witness has something to gain or lose by his testimony' and, therefore, the evidence used
must not be remote or uncertain. [Citations omitted.]" 108 Ill. 2d at 475-76. Here, the evidence
concerning the forgery investigation could establish an incentive for Soden to testify falsely
against Scott. By testifying against Scott and sending him to prison on the cocaine charges, Soden
could possibly avoid the debt he owed to Scott and cast doubt on Scott's claim that he had not
given Soden permission to sign and cash his checks.

Other Evidence Presented at Trial

Nevertheless, the State contends that Scott was able to impeach Soden at trial and to
show Soden's bias against him. The State points out that Scott presented evidence that Soden
received money from law enforcement, that he was provided with housing, that the police failed
to execute an arrest warrant against Soden, that Soden owed money to Scott, and that Soden
used drugs and alcohol while working as an informant. Thus, the State contends that Soden was
able to present his theory of the case and was not denied his right to a fair trial.

Nevertheless, none of the evidence pointed to by the State showed the extent of the
contentious relationship that existed between Scott and Soden. The friendship had soured to the
extent that Soden possibly cashed Scott's checks without his permission and Scott was willing to
turn his friend in to the police. Here, Soden was the principal witness used to convict Scott of the
charges. Soden was the only witness who could identify Scott as the person who had gotten him
the crack cocaine. His credibility was vitally important in this case.

Although the extent of cross-examination of a witness is generally in the discretion of the
trial court, "a more searching examination is to be allowed of a witness who is a party principal,"
and "where the determination of the main issue of fact must largely depend upon the credence to
be given the testimony of a litigant witness a wider range of cross-examination should be allowed
than is usually permitted in the cross-examination of witnesses in general." State v.
Rowland, 172
Kan. 224, 229, 239 P.2d 949 (1952). "'The general rule is that a witness may be cross-examined
for the purpose of disclosing his interest in the action, his hostile feeling, and the extent thereof, in
order that the jury may determine the weight and credibility it will accord all, or any portion, of
his testimony.' [Citation omitted.]" Rowland, 172 Kan. at 229. Because Soden was a
critical
witness for the State, Scott should have been allowed to cross-examine Soden or to bring in
extrinsic evidence of what appeared to be the strongest motive for Soden to implicate Scott in the
crimes.

The evidence of the alleged forgery was relevant and was admissible to show the
contentious relationship between Soden and Scott and Soden's bias against Scott. In Davis
v.
Alaska, 415 U.S. 308, 316, 39 L. Ed. 2d 347, 94 S. Ct. 1105 (1974), the United States
Supreme
Court held:"The partiality of a witness is subject to exploration at trial, and is 'always relevant as
discrediting the witness and affecting the weight of his testimony.' [Citation omitted.]" See also
State v. Matejka, 186 Neb. 454, 456-57, 183 N.W.2d 917 (1971) (Testimony that the
defendant
had previously been physically and verbally abused by police officers testifying against him should
have been admitted into evidence to show their bias and prejudice against the defendant.). As a
result, the trial court should have allowed Scott to present evidence or to cross-examine Soden
about the alleged forgery.

Harmless Error

Although the failure to allow a party to cross-examine a witness about a possible bias or
motivation for testifying is error, the error may be harmless and does not automatically result in
reversal. State v. Jacques, 270 Kan. 173, 182, 14 P.3d 409 (2000). When determining
whether a
trial court's refusal to allow cross-examination of a witness about possible bias or motivation for
testifying was harmless, an appellate court considers the following factors: "(1) the importance of
the witness' testimony in the prosecution's case; (2) whether the testimony was cumulative; (3) the
presence or absence of evidence corroborating or contradicting the testimony of the witness on
material points; (4) the extent of the cross-examination otherwise permitted; and (5) the overall
strength of the prosecution's case. [Citations omitted.]" State v. Jacques, 270 Kan. at
182.

As discussed previously, Soden's testimony was vitally important in this case as he was the
only witness who could identify Scott as the person who got the crack cocaine for him. Although
Kelley was able to testify about his surveillance of the transactions, he was not able to positively
identify Scott as the person who sold Soden the crack cocaine. There were no surveillance tapes
of the transactions introduced at trial. Although Scott was allowed to cross-examine Soden about
the money that he owed to Scott and the benefits that Soden received for working as an
informant, Scott was not allowed to cross-examine Soden or to present evidence about what
appeared to be the strongest motive for Soden to testify against Scott. Soden's testimony
provided the strongest evidence against Scott. If Scott were able to establish Soden's bias or a
motive to falsely implicate Scott in the crimes, it cannot be said beyond a reasonable doubt that
the rest of the State's evidence was so strong that the jury would have still convicted Scott of the
crimes. Therefore, the failure to allow Scott to bring out evidence of the forgery investigation was
reversible error in this case.

Scott's Remaining Arguments

Finally, Scott raises the following three arguments: (1) that the trial court failed to fully
consider his ineffective assistance of counsel claims concerning his trial counsel's conduct at trial;
(2) that his constitutional rights were violated when he was sentenced to the upper number in the
appropriate grid box; and (3) that the trial court failed to make the necessary findings before
ordering him to reimburse attorney fees to the Board of Indigents' Defense Services (BIDS).
Because we are reversing Scott's convictions and remanding for a new trial, these remaining
issues are moot. Any opinion on these remaining issues would be advisory only. As an appellate
court, we do not decide moot questions or render advisory opinions. Skillett v.
Sierra, 30 Kan.
App. 2d 1041, Syl. ¶ 1, 53 P.3d 1234, rev. denied 275 Kan. 965 (2002).